van hoevenbeegh



(No Model.) 5 Sheets-Sheet 1.

H. VAN HOEVENBERGH.

TRANSMITTER FOR PRINTING TELBGRAPHS.

No. 316,686. Patented Apr. 28, 1885 I I Him/Pg Vain/1E6 van hawk 33Mavid) aftbznm mr v/Zfl N. PETERS Fmmmn u mr, Waxhi n nnnnnn c.

(No Model.) 5 Sheets-Sheet 2;

H. VAN HOEVENBERGH.

TRANSMITTER FOR PRINTING TELEGRAPHS.

No. 316,686. Patented Apr. 28, 1885.

M 4"/i7 W%oco h I Hn/r wry, swan my W a I 351 9pm attoznu a J I 4 q k NPETERS. Plwuunm mmmr, Washington. 0.1:.

(No Model.) A 5 Sheets-Sheet 3.

H. VAN HOEVENBERGH.

. TRANSMITTER FOR PRINTING TRLEGRAPHS. No. 316,686.

Patented Apr. 28, 1885.

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(No Model.) 5 SheetsSheet 4.

H. VAN HOEVEN BERGH. TRANSMITTER FOR PRINTING TELEGRAPHS.

"No. 316,686. V Patented Apr. 28, 1885.

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wvewtoi (N0 Model.) 5 Sheets-Sheet 5.

N0. 316,686. Patented Apr. 28, 1885. Q

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HENRY VAN HOEVENBERGH, OE ELIZABETH, NEW JERsEY, AssieNOR TO THEBALTIMORE & OHIO TELEGRAPH COMPANY, OF BALTIMORE, MD.

TRANSMITTER FOR PRINTING-TELEGRAPHS.

SPECIFICATION forming part of Letters Patent No.316,686, dated April 28,1885.

Application filed August 7, 1884. (No model.)

To all whom it may concern.-

Be it known that I, HENRY VAN I-IoEvEN- BERGH, a citizen ofthe UnitedStates, residing in Elizabeth, in the county of Union and State of NewJersey, haveinvented certain new and useful Improvements in Transmittersfor Printing-Telegraphs, of which the following is a specification.

My invention relates to the class of telegraphic apparatus employed foreffecting by means of electric currents a record of communications whichit is desired to transmit from one point to another by means ofcharacter-printing type. It has been customary for this purpose toemploy type-wheels which are revolved by means of any suitable mechanismcontrolled by electric currents, the required type being thussuccessively brought into position to have impressions taken therefrom.

This invention is designed to provide a transmitter for areceivirig-instrument in which type-wheels are dispensed with, and inplace thereof there is employed a series of type arranged in a plane andsupported upon a frame capable of being moved so that any one of thetype which may be desired may be brought above the paper upon which therecord is to be effected, and when in such position may be forcedagainst the paper independently of the remaining type.

This application relates especially to the apparatus employed fortransmitting the currents of the proper character, frequency, andduration for operating areceiving-instrument 5 constructed upon such aplan, and in another application of even date herewith I have describedand claimed sucha receiving-instrument. In this application thereceiving-instrir ment will be referred to and described to such anextent only as may be necessary for the purpose of fully setting forththe operation of the transmitter.

The general mode of operation of the re ceiver may be briefly stated asfollows: The

type are carried upon a flexible support, which is preferablyrectangular in form, and they are arranged in longitudinal andtransverse series,the faces of all the type standing in a plane. Theparts are so constructed that the support may be moved so that thelongitudinal series are successively brought above a printing I platen,or so that the successive transverse series may be brought in likemanner above the platen, and it is further so organized that bothmovements may take place at oncethat is to say, a resultant movement maybe given to the type-support. When the proper type has been placed abovethe platen, an impression is effected therefrom by means of a hammer,which is forced downward against the flexible support by means-of anelectromagnet, thereby causing the particular type desired to be struckagainst the paper.

For the purpose of accomplishing the several results above stated it isnecessary to em- 6 ploy electric currents of a given strength and ofeither positive or negative polarity for moving the type in onedirection, and currents of the same or of less strength and of a givenpolarity for moving the support in the other direction. If, therefore,the currents transmitted be of the greater strength and of theparticular polarity required for occasioning the second movement-say,for instance, positiveboth movements will take place simul- 7 5taneously-that is to say, a resultant movement of the type-support willbe occasioned.

If, however, a' positive current of less strength is employed, amovement of the series of type in one direction will be occasioned; butif a 8 current of the negative polarity be transmitted the movement willbe in the other direction. A third class of currents is required for thepurpose of effecting impressions. These currents are of either polarity,but of greater 8 5 duration than those employed for moving the type. Anentire cessation of the currents effects a return of the support to itsnormal or starting position. In this application it is designed to setforth and claim the apparatus 0 employed for transmitting in the propermanner these several classes of currents.

Referring now to the transmitting devices, the general organization ofthe apparatus is as follows: A series of keys corresponding to 5 thetype carried upon the flexible plate of the receivinginstrument issupported in a suitable frame, bencath which two arms are adapted tomove at right angles to each other. For the purpose of permitting thearms to be readily moved beneath the keys, the frame is preferably inthe form of a section of a globe,

and the arms, which are placed adjacent to the concave surface, arecurved to coincide therewith; These arms, when the transmitter isoperated, move simultaneously toward any key which may be depressed, andeach arm is designed to transmit the required number of impulses formoving the plate of the receiving-instrument a sufficient distance inthe corresponding direction to bring the type corresponding to the keywhich is depressed into position to print. Each arm is for this purposeprovided with circuit-controlling devices adapted to transmit to linecurrents of the character required to move the receiving type-plate inthe corresponding direction, and both arms are impelled by the sameforce, they being connected with each other through a friction-gearing.A portion, at least, of the movements is accomplished simultaneously bythe two arms, and when one arm has reached the key which is depressed itis arrested thereby and retained until the other "arm is likewisearrested; A prolonged current is then sent to line, and this currenteffects the printing. The transmitter is then so operated that it willreturn the arms to their 7 original positions, first interrupting thecurrent transmitted to line, and thereby permitting the receiver toresume its normal position.

' The invention involves certain details of organization andconstruction, which will be fully set forth in connection with thedrawings. In the accompanying drawings, Figure 1 is a plan viewof thetransmitting key-board and circuit-controlling devices. Fig. 2'is a sideelevation, and Fig. 3 is a transverse section, of the'same'. Fig. at isa plan vicw,'partly in section, of the instrument, the key-board beingremoved. Fig; 5 is a diagram showing the organization of thetransmitting-arms and the circuit-closers, together with the arrangementof the circuits. Referring to the drawings A represents a suitable base,upon which the various parts of 'theinstrument are supported. Asupportingframe, A, for the type is carried upon pillars or posts A",extending from the base A. The plate'Ais constructed in the form of arect angular section of a globe. In the plate A there is carried aseries of transmitting-keys, (i, which are designed to be normally heldupward, in the position shown in the drawings, by means of suitablesprings, 12, which surround the same, and are compressed between theplate and the head of the key. Suitable the plate A. Beneath these keysit is de-' signed thattwo transmitting arms, O and 0 shall be moved.These arms are curved so as to conform to the inner or concave surfaceof the plate A, and they are respectively carried upon arms 0 and 0extending from shafts c and c constituting a prolongation of a shaft, 0.The shaft 0 is coupled to the shaft 0 by means of. two. beveledfrictional gear-wheels, 0 and c". lent device, 0 is attached to theshaft 0, and this lever is employed for rotating that shaft, and alsothe shaft c",when itis desired to transmit the impulses required toactuate the receiver. It is designed that the lever 0 shall beopcratedby hand. The portion 0 how- .ever, of the shaft 0 upon which thearm (3 is A suitable lever or other equiva-.

carried is separated from the portion carrying the wheel a, and coupledtherewith by means of a frictional connection or clutch, as indicated atc in Fig. 4. This permits the movement which is communicated to theshaft c by the lever c to be imparted to the shaft 0 even though the arm0 may be arrested, and

the frictional connection permits the arm (I to be moved by therevolution of the shaft 0, even though the arm 0' be arrested. When,however, the paths of both arms are uninterrupted, they will both beadvanced by the action of the lever 0 It will be seen that if any givenkey, a, be depressed and the lever c be then actuated, both arms willmove toward that key and each arm will continue to move until it isarrested by contact with the key. Each arm will therefore move through agiven distance before it is arrested by the key depressed, and therewill be for each keya certain movement of the arm 0 and a certainmovement of the arm 0. The combinations of these two movements areemployed for transmitting the currents required for operating the re-.

ceiver, and the combinations of the two classes of currents transmittedare employed for placing the receiver in position to print the lettercorresponding to the key depressed. For this purpose a pole-changingdevice, D, is applied to the shaft 0 and a circuit closing andinterrupting device, D to the shaft 0 The polechanging device D consistsof two alternating series of contact-segments, d and d, against whichrest two' contact-brushes, e and c The brush 6 is connected with a mainline, L, through conductors 1 and 2, in the latter of which is includedan artificial resistance, 0 The brush 6 is connected with the earththrough a conductor, 3.. The contact-brushes e and 6 press against thelateral surface of the two insulated plates carrying the contactsegments61 and d of the pole-changer D, and these brushes are connected throughconductors 4, 5, and 6, respectively, with the positive and negativepoles of a battery, E. The conductor 5 leads to the brush 6 but theconductor 4 preferably leads to a contact-point, 0 carried upon thelever. 0 to whichis applied a contact-arm, 6. This contact-arm isconnected by means of a conductor, 6, with the positive pole of thebattery E, and it is normally held away from the lever 0 For.ing-scgment of the same.

brush c or e.

line and with the earth at the distant station,

this purpose it is carried upon an arbor, e, I and the friction betweenthe lever and this arbor is sufficient to hold the arm in whateverposition it is placed. When the lever c is pressed downward for thepurpose of actuating the transmitter, the contact-point 0 strikesagainst the arm, and the two conductors 4 and 6 are connected with eachother by the contact of the lever with the arm, and the latter turnsupon its arbor. The circuit of the battery E is thus completed from thepositive pole, through the conductors 6 and 4, to the brush 6*, thencethrough the brush 6 or e", accordingly as the one or the other restsupon a conduct- The negative pole of the battery is connected at thesame time through the conductor 5 and brush 6 to the section b", andthence through the remaining These two brushes are at the same timeconnected with each other, the brush 6 being connected through the mainwhile the brush 6 is, as already stated, connected with the earth at thetransmitting-station, When, therefore, the lever c is actuated, the arm0 will be advanced, and positive and negativeimpulses will betransmitted to linein number depending upon the position of the keywhich is depressed. The parts are preferably so organized that onepositive impulse will be transmitted for each series of keys passed bythe arm 0. These currents may, for convenience, be, considered asreaching the main line through the conductor 2, including the resistancee, which serves to decrease the effective strength of the currents.

The second class of currents are derived by means of the circuitinterrupter D which serves to complete and interrupt the connec tions ofa shunt-circuit around the resistance 6 For this purpose acontact-brush, f, is applied to the conducting-surface of thecircuit-interrupter D and this brush is connected with the conductor 1upon one side of the resistance 0 by a conductor, 7. Asecond brush, fresting upon the periphery of the circuit-interrupter, is connected by aconductor, 8,with the conductor 2 upon the other side of the resistance6 WVhen, therefore, any one of the conducting-segmentsf of theinterrupter D passes beneath the brush f or is in contact therewith, ashunt-circuitis formed around the resistance. When, however, anon-conducting segment, f is in like position, this circuit will beinterrupted. During the movement of the arm 0", therefore, theresistance 6 will be successively shunted, and the strength of thecurrent transmitted to the line will be increased. The parts are soadjusted that the number of completions thus occasioned will be equal tothe number of transverse series of keys which are passed by the arm 0before it is arrested. The two circuit-controlling devices D and D arealso preferably so organized relatively to each other that the reversalsof polarity occasioned by the former will coincide in time with thecompletions and interruptions of the'shuntcircuit around the resistancee When,therefore, both arms 0 and O are being simultaneously advanced,positive currents of the increased strength and negative current-sotless strength will be transmitted to line. If, however, the'arm G bearrested and the arm 0 alone actuated, then only positive and negativecurrents of less strength will be transmit. ted to line. When, on theother hand, the arm 0 alone is operated, currents of a constant polaritybut of increased strength will be transmitted to line, and the parts areso organized that these currents will be of negative polarity,

, the arm 0 being so placed with reference to the keys that whenarrested thereby the brush 6 will be in contact with aconducting-segment of the negative portion (1 of the pole-changer D,When both arms U and 0 have been arrested by contact with a depressedkey, a prolonged current will be transmitted to line, and this currentis employed for actuating the print ing-magnet of the receiver.

For the purpose of obtaining an interruption of the current it isnecessary only to release the lever 0 which immediately falls. away oris moved back from the contact lever 0, thereby interrupting theconnections of the battery E. The arm e is returned to its normalposition by the contact of the lever cwith an insulated point, carriedupon th extension of the arm or lever e". i

It will be understood that it is necessary that the arms 0" and G bereturned to their starting-points without transmitting to line a seriesof impulses, as would be done by a backward movement of thecircuit-controlling devices D and D". For this purpose the two devicesare respectively coupled with their supporting-shafts by means ofratchetwheels 9 and g, which are secured. to the shafts and are normallyconnected with the devices D by engaging pawls or clicks 9 and 9*. Thesepawls cause the circuit-controllers to be advanced when thecorresponding shafts are driven forward; but they permit the shafts tobe returned to their normal positions without actuating the devices Dand D when the shafts are rotated in the opposite direction by slidingover the teeth of the corresponding ratchet-wheels.

I claim as my invention- 1. The combination, substantially ashereinbefore set forth, of a series of transmittingkeys, twotransmitting arms respectively moving in directions at right angles toeach other beneath the same, and a plate for supporting said keys, whichplate is in the form of a section of a globe, means for arresting bothof said arms either together or independently by any one of said keys,and means, substantially such as described, for transmitting impulses bythe movements of said arms.

2. {The combination, substantially as hereinbefore set forth, withafseries of transmitting-keys and two transmitting-arms applied theretoand respectively moving in directions ICC at right angles to each other,of a pole-changi-ng device moving with one of said arms, and

a circuit completing and interrupting device moving with the other ofsaid arms, a battery from which positive and negative impulses aretransmitted by means of the first-named device, and an artificialresistance around which the second device serves to complete other.

3. The combination, substantially as hereinbefore set forth, of a seriesof transmittingkeys, two circuit-closing arms, and means, substantiallysuch as described, for moving said arms beneath said keys eitherindependently of each other or both simultaneously, means, substantiallysuch as described, for transmitting positive electric currents by themovement of one of said arms and currents of increased strength by theother, and means,

substantially such as described, for determining the number and relationof the said currents by the key depressed.

- 4. The combination, substantially as here.-

' inbefore set forth, with a series of transmitting-keys, of means,substantially such as described, for transmitting alternating positiveand negative impulses of a number depending upon the lateral position ofthe respective keys, and "means, substantially such as described, fortransmitting currents of increased strength of the number dependent uponthe longitudinal position of said keys.

5. The combination, substantially as herei inbefore set forth, with aseries of keys, two

circuit-controlling arms, and means, substantially such as described,for moving the same beneath said keys and for arresting the same bycontact with any one of said keys which a may be actuated, of means,substantially such as described, for transmitting currents of differentcharacteristics by the movements of said arms, respectively, and fordetermining makes the number of such impulses of either characteristic'by the position of the key which is actuated.

V 6. The combination, substantially as here- ,plate for supporting thesame, which plate is in the form of a segment of a globe, two curvedarms'extending at right angles to each other beneath said plate, twoshafts respectively supporting said arms, and means, substantially suchas described, for rotating said shafts both simultaneously until one orthe other or both are arrested by contact with any one of said keyswhich may be depressed.

7. The combination, substantially as hereinbefore set forth, with aseries of keys and two transmitting-arms extending beneath the same, oftwo revolving shafts frictionally connected with each other, carryingsaid arms, a

shafts, a circuit-interrupting device moving and negative impulses aretransmitted by the action of said pole-changing device, and means,substantially such as described, for causing an increasein the strengthof the'current at any time transmitted through the'action of saidcircuit pole-changing device.

8. The combination, substantially as hereinbefore set forth, with thearms 0 and C and the frictional gearing between the same,'ofthe'pole-changing device D, the circuit com pleting and interruptingdevice D means, substantially such as described, for actuating saiddevices, the actuatinglever c, the contact-arm 6 the battery 'E, theresistance 6 and the circuit-connections for the same, substantiallysuch as described. g

In testimony whereof I have hereunto subscribed my name this 26th day ofJune, A. D. 1884.

HENRY VAN HOEVANBERGH. [as] Witnesses: DANL. W. EDGEooMB, CHARLES A.TERRY.

pole-changing device moving with one ofsaid with the other, a batteryfrom which positive inbefore set forth, with a series of keys, of a 1

